CNA C-7

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C-7
Type Nine-cylinder radial engine
National origin Italy
Manufacturer Compagnia Nazionale Aeronautica (CNA)

The CNA C-7 was a small nine-cylinder supercharged, geared, single row radial engine designed in Italy in the early 1930s.[1] Three light aircraft class world altitude records were set by the CNA C-7 powered Fiat AS.1 and CNA Eta.[2]


Applications[]

Specifications[]

Data from Jane's All the World's Aircraft 1938[1]

General characteristics

  • Bore: 80 mm (3.15 in)
  • Stroke: 85 mm (3.35 in)
  • Displacement: 3.85 L (235 cu in)
  • Dry weight: dry 125 kg (276 lb)
  • Construction: Aluminium cylinder heads and steel barrels. Cast "Elektron" metal crankcase.

Components

  • Valvetrain: Two valves per cylinder. An overhead camshaft, driven by a bevel shaft running between each pair of cylinders operated the exhaust valve of one and the inlet valve of the next.
  • Supercharger: Centrifugal blower running at crankshaft speed.
  • Fuel system: 1× Memini carburetter
  • Cooling system: Air
  • Reduction gear: 3:1
  • Ignition: Dual ignition: 2× Marelli plugs per cylinder, driven by a different Marelli magneto

Performance

References[]

  1. ^ a b Grey, C.G. (1972). Jane's All the World's Aircraft 1938. London: David & Charles. p. 68d. ISBN 0715 35734 4.
  2. ^ "FAI records: Niclot - 1932". Archived from the original on 11 June 2007. Retrieved 20 March 2012.
  3. ^ Thompson, Jonathan (1963). Italian Civil and Military Aircraft 1930-1945. Fallbrook, California: Aero Publishers, Inc. pp. 131–2.
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